期刊
MOLECULAR PHYLOGENETICS AND EVOLUTION
卷 32, 期 3, 页码 817-822出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2004.04.005
关键词
Acarus; acari; species complex; cytochrome c oxidase subunit 1; 28S rRNA D3; ITS2
The astigmatid mite Acarus siro (Linnaeus 1758) is an important agricultural pest and environmental allergen. However, it is likely that many mites described in the literature as A. siro, collected from both outdoor and stored product habitats, may belong to one of its sibling species, A. farris [Ent. Ber. Amst. 2 (26) (1905) 20] or A. immobilis [Bull. Br. Mus. Nat. Hist. 11 (1964a) 413; Acarologia. 6 (Suppl) (1964) 101]. The three species are difficult to separate morphologically, gene exchange between some of them is possible and, although each species displays environmental preferences, they occur together in some environments. This raises a question about their separate species status. In a pilot study, we investigated whether genetic data supported the separate species status of these forms. Both nuclear (the second internal transcribed spacer region [ITS-2] of the ribosomal cistron) and mitochondrial (cytochrome oxidase subunit I, mtcoxI hereafter) loci were employed for this purpose. MtcoxI data does not conflict the differentiation into three separate species and while the ITS2 data were problematic for this group of mites it suggested that a congener, Acarus gracilis [Ann. Mag. Nat. Hist. 10 (1957) 753], is basal to the A. siro species complex. (C) 2004 Elsevier Inc. All rights reserved.
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